• 대한의생명과학회지
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• 제17권3호
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• pp.245-251
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• 2011

This study was conducted to investigate the effect of soybean peptide on muscle damage index and hormone (testosterone and cortisol) concentration. Subjects of this study were 23 high school male taekwondo players who had participated in regular exercise. They were randomly divided into two groups, one group took soybean peptide (S-peptide, n=13) 4 g a day for 4 weeks and the other took placebo (placebo, n=10) for the same time. We obtained blood samples before and after experiment and analyzed for CPK (Creatine phosphokinase), LDH (Lactate dehydrogenase), ALD (Aldolase), myoglobin, testosterone and cortisol. As for body composition, there was no significant difference in weight, body fat rate and LBM (lean body mass) between the S-peptide and the S-peptide group and placebo group. In CPK, LDH, ALD and myoglobin, S-peptide group was significantly lower than the placebo group and showed significant decrease before and after intaking soybean peptide (P<0.05~0.01). In the concentration of plasma testosterone, S-peptide group was increased from two weeks but not significant difference. The concentration of plasma cortisol showed significantly decrease in the S-peptide (P<0.01). These results indicate that the intake of soybean peptide have positive effect on index of muscle damage and changes of hormone concentration.

• Spatial Information Research
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• 제21권5호
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• pp.15-22
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• 2013

본 연구는 동북아시아 지역의 이산화탄소 분포와 식생지수의 상관성 규명을 목적으로 한다. 이를 위해 지리가중치 분석기법을 활용하여 GOSAT 이산화탄소 측정자료와 MODIS 식생지수에 대해 다중공간회귀 분석을 시행하였다. 그 결과 이산화탄소와 식생지수 사이에는 전체적인 (-)의 상관관계가 나타나고 있음을 확인할 수 있었다. 공간적 자기상관성 측정을 위한 Global Morans'I지수와 Anselin Local Morans'I 통계 분석 결과에서는 이산화탄소는 일정한 군집성을 보이며 분포하고 있는 것으로 나타나났다. 이러한 결과는 산림파괴와 같은 개발 활동이 이산화탄소의 배출에 영향을 미쳐 일정한 군집을 형성하게 된 것으로 추정된다. 그러나 이산화탄소의 분포는 인위적 배출원과 식생의 호흡, 해양의 배출과 흡수 등의 다양한 요인과 결부되어 달라지기 때문에 이산화탄소 분포에 개입되는 다양한 변수와 상관성을 평가하는 후속연구가 필요할 것으로 사료된다.

• 동아시아식생활학회지
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• 제5권1호
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• pp.53-66
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• 1995

The purpose of this research is to investigate how obesity and eating behavior are related to the concentration of serum insulin and lipids and blood pressure of middle-aged men The sample for this study utilizes 240 middle-aged men between th4 age of 40 and 60 living in the city of Kumi. Through a process of anthropometry and categorization by relative body weight, the sample is devide into two groups, the obese group (51 men) and the normal group (129 men). The results of the study were as follows : 1111111. The men from the obese group with the exception of height, subs-capular/triceps skinfold girth ratio(STR) had a higher level of body mass index (BMI), waist and hip circumference, waist/hip girth ratio(WHR), subscapular and triceps skinfold thickness than the normal group (P=0.0001). 2. In comparing the serum insulin and lipids between the obese and normal group, the obese group had a higher level of insulin and triglyceride (P=0.016, P=0.050) but a lower concentration of HDL-cholesterol and HDL-cholesterol/total cholesterol (P=0.034, P=0.004). Also, the obese group had a higher level of systolic and diastolic blood pressure (P=0.001, P=0.029). When looking at the relationship between the serum insulin and lipids and anthropometric measurements, the relationship between waist/hip girth ratio(THR), the concentration of fasting serum insulin and lipids were stronger than the obesity index, body mass index(BMI). 3. Men who exercised regularly had a lower total cholesterol and systolic blood pressure 9P=0.049, P=0.041), and a higher level of HDL-cholesterol/total cholesterol (P=0.004). There was no observable relationship between the food habit score, the preference for fiber foods, and the concentration of serum lipids. Also, the concentration of serum lipids had no apparent effect on the preference for salty, sweet, and greasy foods.

• 대한소아치과학회지
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• 제29권4호
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• pp.625-631
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• 2002

임상에서 사용하고 있는 8종의 항우식 작용을 갖는 항균물질의 조합이 대표적 우식유발 세균인 Streptococcus mutans Ingbritt와 Streptococcus sobrinus 6715-7의 성장에 미치는 영향을 조사하고자 세균별로 28개 조합의 각 항균물질에서 최소 저해 농도와 분할 저해 농도 지수를 구하여 여러 기준에 따라 상승작용, 길항작용, 무관함, 부분적 상호작용 등을 각각 평가하였다. 미국 미생물 학회의 지침에 따라 분류하면 약 34%의 조합에서 상승작용이 관찰되었고 Berenbaum의 분류에 따르면 약 82%에서 상승작용을 갖는다고 해석할 수 있었다. 또한 Isenberg가 정의한 부분적 상승작용은 총 조합수의 절반에서 관찰되었다. 분류기준에 따라 다양한 결과를 얻을 수 있었으나 두 가지 항균물질의 조합이 우식유발 세균을 억제하는데 상승작용을 나타내는 경향이 존재함을 관찰할 수 있었고 따라서 우식유발세균을 억제하는데 있어서 항균물질의 단독 사용보다 세균의 생태와 대사의 여러 부분에 영향을 미치는 항균물질의 조합은 유용할 수 있다는 것을 알 수 있었다.

• 한국산림과학회지
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• 제95권4호
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• pp.476-483
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• 2006

본 연구는 산악형 국립공원의 탐방집중도를 분석하기 위하여 지니계수와 로렌츠곡선을 적용하여 실증분석 하였다. 탐방집중도는 크게 시간적 변화(1997-2005)와 개별 국립공원 탐방객의 여행출발지 분포 변화에 따른 공간적 집중도를 분석하였다. 그 결과, 2004년과 2005년의 지니계수는 .453괴 .446으로 다른 해에 비하여 불균등 정도가 심한 것으로 나타났다. 개별 산악형 국립공원을 탐방하는 여행출발지 분포에 따른 결과에서는 북한산과 계룡산이 각각 .916, .855로 불균등도가 극심하였으며, 반면에 덕유산과 변산반도가 .508, .628로 상대적으로 낮게 나타났다. 이러한 결과는 북한산과 계룡산 같이 배후도시에 인접하여 소재하고 있는 국립공원의 지역 탐방객 집중이 심각한 것으로 나타난 반면, 덕유산, 변산반도, 소백산 등은 상대적으로 특정지역에 편중되어 있지 않다는 것을 의미한다. 본 연구에서 적출한 탐방집중정보는 지금까지 탐방분산정책이 개별 국립공원 범위에서 수행되던 한계를 벗어나 전체 산악형 국립공원을 대상으로 시계열 변화에 따른 탐방접중도와 자원유형이 유사한 국립공원간 탐방집중도를 서로 비교하여 전 국립공원 범위에서의 탐방분산정책 수립에 기본적인 정책자료로 활용될 수 있을 것이다.

• 환경영향평가
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• 제8권1호
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• pp.81-92
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• 1999

This study discussed the appropriateness of organic matter indexes such as biochemical oxygen demand(BOD) and chemical oxygen demand with potassium permanganate($COD_{Mn}$) in water quality environmental standard of streams and lakes and the applicability of the items to water quality environmental standard to add or substitute COD with potassium dichromate ($COD_{Cr}$) and total organic carbon(TOC) being used as index of organic matter. And indexes of organic matter content and organic carbon concentration were distinguished between dissolved and particulate component in water sample to estimate their effect on pollutants loading in lake and stream. The ratio of $COD_{Cr}$/BOD was 5.1 under BOD concentration 3mg/L in river water quality environmental standard II, and 2.67 above it. This ratio was diminished to 2.04 when BOD concentration was more than 8mg/L, in river quality environmental standard IV. Also the ratio of $COD_{Mn}$/BOD showed 2.16 under 3mg/L(BOD), and 1.1 above it. This ratio is also diminished to 0.84 over 8mg/L(BOD). Accordingly, we should apply this ratio depending on the concentration level to add and change organic matter index of water quality environmental standard newly. The ratio $COD_{Cr}/COD_{Mn}$ both in lake and stream shows 2.37(r=0.986, p<0.001). But the ratios showed range of 2.34~2.50, which is no much difference of this ratio according to $COD_{Mn}$ concentration.

• 한국식품과학회지
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• 제47권4호
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• pp.431-437
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• 2015

In this study, high-acidity cider vinegar (HACV) was produced by alcoholic and acetic acid fermentation of apple concentrate without any nutrients and then the optimum alcohol concentration was determined through a qualitative study. HACV was fermented with different initial alcohol concentrations (6-9%) during the process of acetic acid fermentation. The highest content of reducing sugar, organic acids, and free amino acids was observed at 6% of initial alcohol concentration. Approximately 20 types of volatile compounds were identified by solid-phase microextraction (SPME) and GC-MS. The total volatile content was the highest at 6% of initial alcohol concentration, and the acid content was the lowest at 9% of the initial alcohol concentration. The HACV produced by a two-stage fermentation process was qualitatively better than commercial HACV presenting the highest value at 6% of initial alcohol concentration. Malic acid, aspartic acid, and hexyl acetate were selected as quality index components of HACV production by two-stage fermentation on the basis of correlation between their physicochemical properties and the sensory attributes of HACV.

• 디지털융복합연구
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• 제15권12호
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• pp.625-633
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• 2017

본 연구는 가구소득의 불평등에 민간보험수입과 의료비본인부담지출이 어떠한 영향을 미치는지를 확인하기 위하여 2015년 의료패널조사데이타에 대하여 소득계층별 집중지수와 집중곡선 분석을 실시하였다. 주요 분석결과는 다음과 같다. 첫째, 가구소득 집중지수가 0.3580으로 소득이 고소득층에 집중되어 있어서 불평등 정도가 상당히 큰 것으로 나타났다. 둘째, 민간보험수입이 고소득층에 집중하여 적지만 고소득층 가구의 소득집중현상을 강화시킨다. 셋째, 저소득층의 의료비 본인부담지출이 많은 것으로 나타났다. 끝으로 가구소득에서 전체 의료비본인부담지출을 제외한 소득에 대한 집중지수가 0.3676으로 나타나서 의료비본인부담지출 후에도 소득이 고소득층에 크게 집중되어 있었다. 따라서 민간보험수입과 의료비본인부담지출은 모두 가구소득불평등을 심화시키는 요인으로 작용하고 있어서 융 복합적 연구 및 정책방안 마련을 통한 개선이 요구된다.

• Journal of Korea Trade
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• 제25권5호
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• pp.93-109
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• 2021

Purpose - The logistics industry is often featured by its location relevance and industrial concentration. Industrial concentration is conducive to the effective transmission of information by reducing transaction costs and improving transaction efficiency, thus promoting the development of trade. The main purpose of this paper is to measure the spatial total factor productivity and location quotient of the logistics industry in Korea, and to study the impact of the logistics industry efficiency and agglomeration effect on import and export trade in Korea. Design/methodology - First, used the spatial stochastic frontier method to measure the spatial total factor productivity of the logistics industry in Korea, this serves as the efficiency index of the logistics industry in various regions of Korea. Second, calculated the location quotient (LQ) of the logistics industry to measure the industry's concentration degree. Third, employed a spatial econometric model to analyze the impacts of factors such as the efficiency and concentration levels of the logistics industry on import and export trade in Korea. Findings - This study's main findings can be summarized as follows: this study found that the overall efficiency of the logistics industry in Korea needs to be improved, even though it showed an upward trend in all regions of the country; Moreover, the agglomeration level of Korea's logistics industry needs to be improved; Finally, the positive spatial correlation and industrial agglomeration effect of Korea's logistics industry had a positive impact on the country's import and export trade. Originality/value - This study is innovative in terms of research perspective and methods. Most of the previous studies have measured the development level of the logistics industry using the logistics performance index (LPI), Fewer studies have assessed through the spatial total factor productivity and location quotient of the logistics industry in Korea to measure the efficiency index of the logistics industry in various regions of Korea and concentration degree, as well as there was almost no study on the impact of logistics industry efficiency and agglomeration effect on import and export trade in Korea. This study addresses this limitation by analyzing the impacts of the efficiency and agglomeration effect of the logistics industry on import and export trade in Korea.

• Korean Journal of Radiology
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• 제19권6호
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• pp.1077-1088
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• 2018

Objective: To correlate CT parameters on detector-based dual-energy CT enterography (DECTE) with Crohn's disease activity index (CDAI) and externally validate quantitative CT parameters. Materials and Methods: Thirty-nine patients with CD were retrospectively enrolled. Two radiologists reviewed DECTE images by consensus for qualitative and quantitative CT features. CT attenuation and iodine concentration for the diseased bowel were also measured. Univariate statistical tests were used to evaluate whether there was a significant difference in CTE features between remission and active groups, on the basis of the CDAI score. Pearson's correlation test and multiple linear regression analyses were used to assess the correlation between quantitative CT parameters and CDAI. For external validation, an additional 33 consecutive patients were recruited. The correlation and concordance rate were calculated between real and estimated CDAI. Results: There were significant differences between remission and active groups in the bowel enhancement pattern, subjective degree of enhancement, mesenteric fat infiltration, comb sign, and obstruction (p < 0.05). Significant correlations were found between CDAI and quantitative CT parameters, including number of lesions (correlation coefficient, r = 0.573), bowel wall thickness (r = 0.477), iodine concentration (r = 0.744), and relative degree of enhancement (r = 0.541; p < 0.05). Iodine concentration remained the sole independent variable associated with CDAI in multivariate analysis (p = 0.001). The linear regression equation for CDAI (y) and iodine concentration (x) was y = 53.549x + 55.111. For validation patients, a significant correlation (r = 0.925; p < 0.001) and high concordance rate (87.9%, 29/33) were observed between real and estimated CDAIs. Conclusion: Iodine concentration, measured on detector-based DECTE, represents a convenient and reproducible biomarker to monitor disease activity in CD.